Improvement in electrical semaphores



8 sheets sheet 1.

ulmsrw. ELECTRICAL SEMAPHORES.

No. 194,777. Patented S ept. 4,1877.

'- 8Sheets- Sheet Z.

' U. JUSTON.

ELECTRICAL SEMAPHORES.

No. 194,777. Patented Sept. 47,1877.

8 Sheets-Sheet 3. U JESTQN.

ELECTRICAL SEMAPHORES. No. 194,777;

II. PETERS, FNOTO-LITMOGRAPHER, WASHINGTON, D C.

Patented Sept. 4,1877.

8 Sheets-Sheet 4.

ubws'w-ou. ELECTRICAL SEMAPHORES.

No. 194,777. Patented Sep t. 4,1877.

Liven tor:

' v Mthesses:

N.FETERS, PHOTOLITHOGRAFHER, WASHINGTQNJL C.

, a Sheets-Sheet s.

13.. JUSTON. ELECTRICAL SEMAPHORES. No. 194,777. Patented Sept. 4,1877.

l O L Q l l e75; a v Q III-J Witnesses: .7 v lninyntm z N-FETEHS,FHOTO-LITHO'GRAPHER. WVSIHNGTON. h C.

8 Sheets$heet 6.

U. JUSTON. I ELECTRICAL SEMAPHORES. No. 194,777, Pat Sept. 4,1877. r

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I 7 s Sheets- Sheet 7. I U. JUSTON.

ELECTRICAL SEMAPHORES. No. 194,777. 'Patented. Sept. 4,1877.

N.PETEHS, FHOTDLITHOGRAFHER, WASHINGTON. 0 CA 8 Sheets-Sheet 8.

U..TUSTON. ELECTRICAL'SEMAIPHO'RES No. 194,777, Patgnted Sept. 4,1877.

079:1. I I I I I I z I I I I I O I I 0 I I- I O O I I I I I I. I I o 0 iz m (I I z o I Q) I 0 9 1 witnessesr I fnvezztor:

N. FETERS.'PHOTD-LYTHGGRAPHER. WASHII'IGTON. D C.

UNITED STATES PATENT OFFICE:

URSIN J USTON, OF PARIS, FRANCE,

- IMPROVEMENT m ELECTRICAL SEMAPHORES.

Specification forming part of Letters Patent No. 194,777, datedSeptember 4, 1877; application filed i June 14, 1877, Patented inFrance, March 17, 1877, for fifteen years.

7 To all whom it may concern of the same, reference being had to thean-- nexed sheets of drawings, making a partot' the same.

This invention relates to an electric disk signaling apparatus, chieflyintended for use on railways as a means of giving instant warning, andthus preventing collisions in the event of accidents occurring throughthe negligence of carelessness of the employs in charge of the traffic.

The apparatus consists of three principal parts, viz: first, anelectro-magnet; second, mechanism for retaining the disk in the loweredposition, and for releasing it therefrom; third, a disk-signal.

In the accompanying drawings, Figure 1 represents an elevation on asmall scale of the signaling apparatus, with the disk in the loweredposition. Fig. 2 shows a face view of the unlocking mechanism, this andthe following figures being drawn to a largerscale. Fig. 3 is a view ofthe opposite side of the unlocking mechanism to that shown in Fig.2, thecovering-plate being removed in order to show-the internal arrangement;and Figs. 4 to 14 show face and edge views of the parts in detail.

The same letters of reference indicate the same parts in all thesefigures,

The electro-magnet a may either actuate the unlocking mechanism or itmay be so combined as to unlock the disk directly. The unlockingmechanism shown in Figs. 2 and 3 is mounted on a steel plate, b. (Seenin the inside face and end views, Fig. 4, and in outside view and planin Fig. 14.) This mechanism, when released, liberates the disk from thecatch that holds it down, and allows it to be drawn up by a weight intothe displayed position. The mechanism resembles a gun-lock, and consistsof a cooking or setting handle, 0, Fig. 5, pivoted at din the plate b,and in a plate, 6, Fig. 6, attached to said plate; a tumbler, f, Fig. 7,fixed on the axis d of the setting-hart die; a spring, h, Fig. 11,acting on the tumbler f one or two triggers, '1; j, Figs. 12 and 13, ofwhich one acts as a detent, engaging with the notch of the tumbler f adetentspring, 16, Fig. 8; a square bolt or. push-rod, l,- of steel, Fig.9, fitted in guides, and slid along therein when the tumbler f isreleased from the detent 11,- and, lastly, a lug, m, Fig. 10, fixed toplate b, by which the disk is retained in the lowered position.

The disk n, Fig. 1, is made of sheet metal, about five feet square, andhas fixed to it a flat spring, 0, whose free end has an eye, 1), whichhooks onto the lug m. The disk n is raised by the action of a weight,1', which is connected to the disk by chains as passing over pulleys y.The disk, as well as the weight, is guided by vertical iron wires s s t,attached at their lower ends to a metal plate buried in the ground, andat their upper ends to a beam, v, supported on a post erected for thepurpose, or on one of the ordinary telegraph-posts. z, bracket fixednear the base of the post to carry the unlocking mechanism and theelectromagnet a.

The whole being arranged as described, and the disk in the loweredposition shown in Fig. 1, the action is as follows: If a current ispassed through the electro-magnet a, its armature u is attracted andpresses in the direction indicated by the arrow in Figs. 1 and 2, on thetrigger j, which acts in turn on the detent of the other trigger t, andthus liberates the tumbler.

The spring h acting on the tumbler oscillates it, and the nose Xof thetumbler, which passes through the mortise Z, strkes the end of the bolt1 and drives it forward, so as to push the eye 1; oft the lug m,whereupon the disk n is liberated and drawn up to the beam '0 by theweight a".

The electro-magnet armature may be made to act directly upon triggeriinstead of through the other trigger j.

The disk is set in the lowered position by the attendant in chargepulling it down by means of the chain attached to its lower edge, andhooking eye 1) on the lug m, the handle 0 having been first raised.

One of these disks should be placed at each curve, at such intervals asto allow a clear view of the line from one disk to the other.

The disk remains under the control of the officials at the departure andarrival stations,

whatever may be the distance, provided the electric circuit is unbroken.A battery and circuit-are necessary to simultaneously actuate all theapparatus at any distance, which enables the station officials toconstantly control the movements of all the trains, and to communicatetherewith by means'ot' a portable telegraphic apparatus, the locality ofwhich will be indicated at the disk.

Working of the-apparatus: There-must be a voltaic pile and a telegraphicwire in order to move simultaneously all the apparatus,

whatever may be'the'distance, permitting thus the station-master todispose constantly of all the trains in motion, and to communicate withthem by means of a movable telegraphic apparatus,*the-place of 'whichwill be indicated on the disk.

' electric unlocking=armature u, all arranged so that the disk n may belocked in its lowermostposition, and unlocked by an electric"current,substanti'allyas and for the purpose herein shown anddescribed.

URSIN JUSTON.

Witnesses:

LoUIs MORTUREUX, JEAN BAPTISTE HOLLAND.

